Yeah but at a-level it's so boring, why do I have to trudge through several units of vectors, Newtonian physics, circuits, Hooke etc just to get the interesting stuff like particle physics (which granted is more exciting than classical physics) Stuff like electromagnetism and astronomy is interesting, granted, it's just what you had to do to be able to study it at a-level. It didn't help that my teachers at sixth form weren't the best and couldn't explain what I didn't understand so I dropped it at AS and took Chemistry at university instead. I did originally plan to take the full physics A-level at sixth form and I actively worked towards getting a B at Maths GCSE just so that I could. I even got upset when I got told I could only take the foundation maths paper.
Just because I've always found it more fascinating theoretically to learn about the very fabric of matter itself. Chemistry is really beautiful if you get to it, crystal structures, interesting theories... Plus it was my best subject at secondary really